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Topic: ecm questions (Read 711 times) previous topic - next topic

ecm questions

Is there a difference "besides one being for an automatic" on a la2/la3 or a-- 8au ecm ?
What the hell are the differences between the 3?

ecm questions

Reply #1 –
Small refinements to the spark and fuel maps.  For instance, the 8UA uses more timing in the lower rpms, where the LA3 is a bit more agressive with the timing in the upper rpm range.
Alot of people have switched to the 8UA and gotten a noticeably better idle quality.
Personally, I've got an LA3 in my 88tc 5speed, and my son has an 8UA in his 89 mustang with a 2.3T/5speed combo, and I can't tell a difference in idle quality.
So take it for what it's worth.
I guess it comes down to what ever works for your particular combo.
88 TC 5speed, 168000+ miles, stock 2.3T long block, ported RFE6 exhaust, Evergreen T3 running 15#'s.
Up next: FMIC, fresh air intake, ported intakes, ported big valve head.

ecm questions

Reply #2 –
Thanx--Well my car is stock--the only thing in its future for now is a manual boost controller -I fried my computer and I bought a 8au that was referb'd by ford in 91.
I just needed to get the car back to normal for now,I plan on giving my LA3 to my buddy to repair. Also Is there a better aftermarket comp.? one you can plug a laptop into ect.
AND
The t-5 "how much hp. can they handle? I want to do a 347 with a single turbo-or a f1-r  Supercharger but I really dont feel like buying a Tremec t-56 @ 1700$ used

ecm questions

Reply #3 –
The TC T-5 is rated for 240Ft Lbs torque, so it'd be in destruct mode with the combo you mentioned... Anyway, has a 3.97 granny gear first, not very useful with a V8 unless you were running a 2:73 rear... The later motorsports T-5 has a 2.95 1st and is rated at 325ft lb, still no doubt iffy for your combo...

Third gear is the Achilles heel, I busted a early 5.0 version in a stock '86 GT Stang...

ecm questions

Reply #4 –
Well that figures :/ 
Oh well I'll just have to go with a built auto-
I have the f1r :D I'm just iching to stick it on something :burnout:
I traded my waverunner for the entire setup minus motor.
But the combo went 9.4 --they went to a f2 and runs 8.70 @176 :bowdown: this is a heavy foxbody conv. full interior :bowdown: